<?PHP //$Id: block_course_list.php,v 1.46.2.6 2008/08/29 04:23:38 peterbulmer Exp $

include_once($CFG->dirroot . '/course/lib.php');

class block_course_list extends block_list {
	function init() {
		$this->title = get_string('courses');
		$this->version = 2007101509;
	}
	
	function has_config() {
		return true;
	}

	function get_content() {
		global $THEME, $CFG, $USER;

		if($this->content !== NULL) {
			return $this->content;
		}

		$this->content = new stdClass;
		$this->content->items = array();
		$this->content->icons = array();
		$this->content->footer = '';

		$icon  = "<img src=\"$CFG->pixpath/i/course.gif\"".
				 " class=\"icon\" alt=\"".get_string("coursecategory")."\" />";
	   
		$adminseesall = true;
		if (isset($CFG->block_course_list_adminview)) {
		   if ( $CFG->block_course_list_adminview == 'own'){
			   $adminseesall = false;
		   }
		}

		if (empty($CFG->disablemycourses) and 
			!empty($USER->id) and 
			!(has_capability('moodle/course:update', get_context_instance(CONTEXT_SYSTEM)) and $adminseesall) and
			!isguest()) {	// Just print My Courses
			if ($courses = get_my_courses($USER->id, 'visible DESC, fullname ASC')) {
				foreach ($courses as $course) {
					if ($course->id == SITEID) {
						continue;
					}
					$linkcss = $course->visible ? "" : " class=\"dimmed\" ";
					$this->content->items[]="<a $linkcss title=\"" . format_string($course->shortname) . "\" ".
							   "href=\"$CFG->wwwroot/course/view.php?id=$course->id\">" . format_string($course->fullname) . "</a>";
					$this->content->icons[]=$icon;
				}
				$this->title = get_string('mycourses');
			/// If we can update any course of the view all isn't hidden, show the view all courses link
				if (has_capability('moodle/course:update', get_context_instance(CONTEXT_SYSTEM)) || empty($CFG->block_course_list_hideallcourseslink)) {
					$this->content->footer = "<a href=\"$CFG->wwwroot/course/index.php\">".get_string("fulllistofcourses")."</a> ...";
				}
			}
			$this->get_remote_courses();
			if ($this->content->items) { // make sure we don't return an empty list
				return $this->content;
			}
		}

		$categories = get_categories("0");  // Parent = 0   ie top-level categories only
		if ($categories) {   //Check we have categories
			if (count($categories) > 1 || (count($categories) == 1 && count_records('course') > 200)) {	 // Just print top level category links
				foreach ($categories as $category) {
					$linkcss = $category->visible ? "" : " class=\"dimmed\" ";
					$this->content->items[]="<a $linkcss href=\"$CFG->wwwroot/course/category.php?id=$category->id\">" . format_string($category->name) . "</a>";
					$this->content->icons[]=$icon;
				}
			/// If we can update any course of the view all isn't hidden, show the view all courses link
				if (has_capability('moodle/course:update', get_context_instance(CONTEXT_SYSTEM)) || empty($CFG->block_course_list_hideallcourseslink)) {
					$this->content->footer .= "<a href=\"$CFG->wwwroot/course/index.php\">".get_string('fulllistofcourses').'</a> ...';
				}
				$this->title = get_string('categories');
			} else {						  // Just print course names of single category
				$category = array_shift($categories);
				$courses = get_courses($category->id);

				if ($courses) {
					foreach ($courses as $course) {
						$linkcss = $course->visible ? "" : " class=\"dimmed\" ";

						$this->content->items[]="<a $linkcss title=\""
								   . format_string($course->shortname)."\" ".
								   "href=\"$CFG->wwwroot/course/view.php?id=$course->id\">" 
								   .  format_string($course->fullname) . "</a>";
						$this->content->icons[]=$icon;
					}
				/// If we can update any course of the view all isn't hidden, show the view all courses link
					if (has_capability('moodle/course:update', get_context_instance(CONTEXT_SYSTEM)) || empty($CFG->block_course_list_hideallcourseslink)) {
						$this->content->footer .= "<a href=\"$CFG->wwwroot/course/index.php\">".get_string('fulllistofcourses').'</a> ...';
					}
					$this->get_remote_courses();
				} else {
					
					$this->content->icons[] = '';
					$this->content->items[] = get_string('nocoursesyet');
					if (has_capability('moodle/course:create', get_context_instance(CONTEXT_COURSECAT, $category->id))) {
						$this->content->footer = '<a href="'.$CFG->wwwroot.'/course/edit.php?category='.$category->id.'">'.get_string("addnewcourse").'</a> ...';
					}
					$this->get_remote_courses();
				}
				$this->title = get_string('courses');
			}
		}

		return $this->content;
	}

	function get_remote_courses() {
		global $THEME, $CFG, $USER;

		if (!is_enabled_auth('mnet')) {
			// no need to query anything remote related
			return;
		}

		$icon  = '<img src="'.$CFG->pixpath.'/i/mnethost.gif" class="icon" alt="'.get_string('course').'" />';

		// only for logged in users!
		if (!isloggedin() || isguest()) {
			return false;
		}

		if ($courses = get_my_remotecourses()) {
			$this->content->items[] = get_string('remotecourses','mnet');
			$this->content->icons[] = '';
			foreach ($courses as $course) {
				$this->content->items[]="<a title=\"" . format_string($course->shortname) . "\" ".
					"href=\"{$CFG->wwwroot}/auth/mnet/jump.php?hostid={$course->hostid}&amp;wantsurl=/course/view.php?id={$course->remoteid}\">" 
					. format_string($course->fullname) . "</a>";
				$this->content->icons[]=$icon;
			}
			// if we listed courses, we are done
			return true;
		}

		if ($hosts = get_my_remotehosts()) {
			$this->content->items[] = get_string('remotemoodles','mnet'); 
			$this->content->icons[] = '';
			foreach($USER->mnet_foreign_host_array as $somehost) {
				$this->content->items[] = $somehost['count'].get_string('courseson','mnet').'<a title="'.$somehost['name'].'" href="'.$somehost['url'].'">'.$somehost['name'].'</a>';
				$this->content->icons[] = $icon;
			}
			// if we listed hosts, done
			return true;
		}

		return false;
	}

}

?>
